[Mono-bugs] [Bug 503989] New: Debugger does not work when NX flag (Intel XD bit) is disabled in BIOS settings.

bugzilla_noreply at novell.com bugzilla_noreply at novell.com
Thu May 14 14:06:13 EDT 2009


           Summary: Debugger does not work when NX flag (Intel XD bit) is
                    disabled in BIOS settings.
    Classification: Mono
           Product: Mono: Debugger
           Version: unspecified
          Platform: x86-64
        OS/Version: openSUSE 11.0
            Status: NEW
          Severity: Normal
          Priority: P5 - None
         Component: cli
        AssignedTo: martin at novell.com
        ReportedBy: krottmayer.johannes at inode.at
         QAContact: mono-bugs at lists.ximian.com
          Found By: ---

User-Agent:       Mozilla/5.0 (X11; U; Linux x86_64; de; rv:
Gecko/2009042700 SUSE/3.0.10-1.1 Firefox/3.0.10

MDB does not work when Intel XD bit is disabled in BIOS settings.

Reproducible: Always

Steps to Reproduce:
AMI BIOS (Mainboard: ECS Elitegroup P35T-A, CPU: Intel Core 2 Quad Q6600):

Disable "Intel XD bit" under "Advanced Options" in BIOS settings.

NX Flag (Intel XD Bit) disabled:

$ mdb HelloMono.exe
Mono Debugger
(mdb) r
Starting program: HelloMono.exe
Thread @1 stopped at #0: 0x7fffae3d5da1.
0x7fffae3d5da1  add    %al,(%rax)
(mdb) c
Thread @1 received signal 11 at #0: 0x7fffae3d5da1.
0x7fffae3d5da1  add    %al,(%rax)
(mdb) c

Native stacktrace:

        /usr/bin/mono [0x47f7b1]
        /usr/bin/mono [0x4af74d]
        /lib64/libpthread.so.0 [0x7f04a54afb30]

Got a SIGSEGV while executing native code. This usually indicates
a fatal error in the mono runtime or one of the native libraries
used by your application.

Thread @1 received signal 6 at #0: 0x7f04a4f245c5 in raise+0x35.
0x7f04a4f245c5  cmp    $0xfffffffffffff000,%rax
(mdb) c
Thread @1 died with fatal signal 6.
(mdb) Thread @1 exited.
Process #1 exited.
Target exited.

ERROR: No target.
(mdb) q

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